The following Billings Gazette articles provide much information about the "Clark on the Yellowstone" Signature Event. Links to these and more can be found at http://www.billingsgazette.net/specialreport/?s/clarkdays

Clark descendant re-enacts signing of pillar - 7/26/06
Thousands take part in National Day of Honor - 7/26/06
Upper Yellowstone lures recreationists - 7/25/06
Re-enactors of explorer Clark steep themselves in history - 7/25/06
Descendant of Clark meets ex-owner of Pompeys Pillar - 7/25/06